Heat/Cool Control Application - gefran 650 Installation And Instruction Manual

5.
5.1.

Heat/cool control application

A 650 controller (model 650–D-R00-00000-1) controls a
heating element via a solid-state relay connected to a
logic output.
A TC sensor measures the temperature.
Each branch of the circuit is protected by a fuse.
The cooling or alarm relay is protected by a snubber.
The following diagram shows the various connections.
One switch can control more than one controller.
5.1.1. Connection diagram
L
Controller fuse
N
80208G_MHW_650-1250-1350_01-2017_ENG
EXAMPLES AND APPLICATION NOTES
Fuse relay cooling
Snubber
Cooling or
alarm relay
With Quick Configuration you set:
• sensor type (TC);
• unit of measurement of temperature (°C);
• the logic output function (HEAT);
• the relay output function (ALRM1);
• the setpoint, i.e. the temperature to be maintained
(SETP);
• the temperature value that trips the alarm (ALRM1).
or alarm
19 7
20 8
21 9
22 10
23 11
24 12
650 Controller
5. Examples and applicative notes
Heating element
fuse
Solid state
6
relay
5
4
3
+
2
1
-
T/C
Heating
element
137